WATER – A total of 28,139,000 gallons of water were delivered, 3,879,000 gallons from Alder Creek treatment plant, 10,310,000 gallons from Brownell Springs and 13,950,000 gallons purchased from City of Portland. 10.6 inches of rainfall were recorded at the treatment plant site during December. We experienced some problems with a power supply on the SCADA system on the 12th which required manual operation and oversight over the weekend.

WASTEWATER – A total of 61,770,000 gallons of sewage were treated and discharged to Iseli Nursery for irrigation. Minimum flow was 1.2 MGD on the 16th. Maximum flow was 3.08 MGD on the 25th. (rainfall was 0.53 inches on the 24th and 0.26 inches on the 25th). A total of 8.02 inches of rainfall was recorded during December.  BOD concentration was 12 mg/l; BOD loading was 173 lbs.; permit allows 10 mg/l and 125 lbs.; SS concentration was 9.9 mg/l; SS loading was 146 lbs.; permit allows 10 mg/l and 125 lbs.  Effluent BOD and SS permit limits do not apply when the treated wastewater is used for irrigation – these figures are shown to demonstrate treatment efficiency. No sludge was processed, hauled or spread during the month. The pumps at Marcy St.; Northside, Southside, Southeast, Southwest and Meinig Ave. lift stations ran a total of 580 hours with no significant problems. A pump that failed last September at Northside pump station was replaced with a new unit.

STREETS – The street sweeping contractor spent 64 hours sweeping streets and collected more than 38 tons (53 cu. yds.) of debris, covering 205 lane miles.We replaced the transfer pump and some wiring on our liquid de-icer system in December.

PARKS / OTHER – PW staff resumed cleaning sanitary sewer lines, storm drain catch basins and removing filters from catch basins in new developments where home construction is nearly completed.